Set up a new hub. Controlling one switch on the local network. When I attempted to add the Amazon Alexa smartapp in the Smartthings mobile app, I found that it is not shown in the list of available smartapps!

Obviously, I can’t integrate with Alexa without the smartapp. Where did it go?

Also…Can anyone tell me why the hub does not appear in the “From:” pulldown when enabling the Smartthings skill in Alexa? Note that the hub is visible to and controllable by the Smartthings app (even when using cellular data — outside of my local network.)

Why would a different hub location appear in the pulldown, when that location has never been associated with the Amazon account I used to set up this Echo?

Sorry to self-respond, but later readers who have encountered this odd issue should know that it apparently can take time for a registered hub to propagate. In my case, it appeared in the Smartthings skill pull-down menu after 15-20 minutes. Network conditions could be the culprit.

I still can’t explain the appearance of a hub that was never associated with the Amazon account in the pull-down menu. Because the extraneous hub was associated with a separate Amazon account that had been logged into from my IP address, I suspect that Alexa is caching values, although Amazon support insisted that this is not the case.